我有一个数据库,可以跟踪用户的提醒数据(提醒名称,注释,日期,时间等)。第一列是它的主键(_ID)。 ListView从数据库中填充,它显示一组带有提醒名称的简单行,如下所示:
取出垃圾。
遛狗。
吃午饭。
等
现在我的问题是,如何让我的应用找出点击了哪个特定提醒?单击一行时,我需要从我的数据库中找到其主键(_ID列),并能够检索该行中的所有数据。
到目前为止,我知道我需要使用onItemClick来检测点击。但是,如何获取已单击的项目的主键值(_ID)?我目前的代码如下:
final Context context = this;
//DB Connectivity variables.
protected RemindersDAO remindersDAO;
protected SimpleCursorAdapter remindersCursorAdapter;
public ListView viewRemindersListView;
@SuppressWarnings("deprecation")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_local_reminders);
// Get rid of the app title in the action bar.
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayShowTitleEnabled(false);
viewRemindersListView = (ListView) findViewById(R.id.listview_view_local_reminders);
remindersDAO = new RemindersDAO(this);
Cursor cursor = remindersDAO.all(this);
remindersCursorAdapter = new SimpleCursorAdapter(this,
R.xml.view_reminders_item_layout,
cursor, new String [] { RemindersDAO.NAME },
new int[] { R.id.view_reminders_item_text } );
viewRemindersListView.setAdapter(remindersCursorAdapter);
}
@Override
public void onItemClick(AdapterView<?> listView, View view, int position, long arg3) {
remindersDAO = new RemindersDAO(this);
Cursor cursor = remindersDAO.all(this);
int idColIndex = cursor.getColumnIndex(RemindersDAO._ID);
int rowId = cursor.getInt(idColIndex);
}
@Override
public boolean onCreateOptionsMenu(com.actionbarsherlock.view.Menu menu) {
// TODO Auto-generated method stub
MenuInflater inflater = getSupportMenuInflater();
inflater.inflate(R.menu.activity_view_local_reminders, menu);
return super.onCreateOptionsMenu(menu);
}
public boolean onOptionsItemSelected(MenuItem item) {
//Set the classes that are called from each actionbar item.
switch (item.getItemId()) {
case R.id.local_reminders_actionbar_go_advanced:
Intent i=new Intent(this, AdvancedNewReminder.class);
startActivity(i);
return true;
case R.id.local_reminders_actionbar_simple_reminder:
Intent k = new Intent(this, QuickNewReminder.class);
startActivity(k);
return true;
/* case R.id.local_reminders_actionbar_google_tasks:
showGoogleTasksBetaDialog();
return true; */
}
return false;
}
@Override
public void onBackPressed() {
return;
}
}
感谢您的帮助!